Asymptotic integration of the boundary value problems for the singularly perturbed differential-algebraic systems in the critical case. Neliniini Kolyvannya, [S. l.], v. 29, n. 1, 2026. DOI: 10.3842/nosc.v29i1.1543. Disponível em: https://nosc.imath.kiev.ua/index.php/nosc/article/view/1214. Acesso em: 28 jul. 2026.